Exam 1 Flashcards
tooth with longest crown
mandibular canine
longest tooth overall
max canine
widest tooth mesiodistally
mandibular 1st molar
widest tooth buccolingually
maxillary 1st molar
narrowest tooth mesiodistally
mandibular central incisors
generally, teeth have a greater proximal cervical line curvature on the ________ than the _____
greater proximal cervical line curvature on MESIAL instead of DISTAL
proximal cervical line curvatures are greatest on the mesial surface of?
central incisors (max)
proximal cervical line curvatures get smaller moving what direction in the mouth?
posteriorly
on many posterior teeth, the cervical line is in more _____ position on the lingual than on the facial?
occlusal
facial crest of curvature for all teeth is?
cervical third
lingual crest of curvature for all anterior teeth is?
cervical third on the cingulum
lingual crest of curvature for all posterior teeth is?
middle third (slightly more occlusal in mandibular teeth due to lingual tilt)
all incisor, all canines and two cusped premolars have how many lobes?
4
3 cusped premolars have how many lobes?
5
How do you determine number of lobes for molars? How many are there for 3 cusped, 4 cusped and 5 cusped molars?
Number of molar lobes= 1 per cusp
3 cusps= 3 lobes
4 cusps= 4 lobes
5 cusps= 5 lobes
mesial root depression probability max and man incisors?
Max cent= not likely
max lat= variable
mand cent= yes
mand lat= yes
distal root depression probability max and man incisors?
Max central and lateral= NO
mandible central and lateral= yes (and deeper than mesial)
is the mesial cervical line curve greater or lesser than distal on both the central and lateral incisors?
mesial cervical is GREATER
proximal contacts for mesial AND distal for mandibular centrals and laterals are where?
incisal third
What incisor has the most cervical proximal contact? What side?
maxillary lateral incisors on middle third of distal surface
proximal contacts for mesial AND distal for maxillary centrals and laterals are where?
incisal third for both for mesial surface
max central distal= incisal/middle third
max lateral distal= middle third
the outline of maxillary lateral incisor compared to central is?
central= triangular lateral= oval
Diff between central and lateral incisor?
central shallow larger lingual fossa and less frequent pit, distally positioned cingulum. Lateral deep but small fossa with lingual pit; centered cingulum.
facet
wear results in a shiny flat surface of enamel on incisal edge. In normal wear, labial for mandibular incisors and lingual wear on maxillary incisors
mamelons
found on incisal teeth, if still present in an adult it indicates an open bite, 3 mamelons on incisal edge (1 per lobe)
Parts of periodontium?
Gingiva Cementum Periodontal ligament Supporting alveolar bone Alveolar mucosa
dental plaque verses calculus?
- Dental plaque =biofilm of microorganisms that adhere to teeth; contribute to development of diseases and decay
- Dental calculus =tartar, hard mass that forms on teeth due to calcification of dental plaque
alveolar bone is seen on x-rays as?
lamina dura
cementoenamel junction
It is the location where the enamel, which covers the anatomical crown of a tooth, and the cementum, which covers the anatomical root of a tooth, meet
longest root?
maxillary canine
Perikymata
numerous horizontal ridges on the enamel of newly erupted permanent teeth
